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Vehicular Adhoc Network is basically the solution of several problems associated while vehicles are plying on the road. This paper mainly focuses and encourages to think over the various issues of the VANETs which are needed to be considered very carefully and handled in very focused manner for bringing the VANET implementation a big reality. This paper provides an outline of the common VANET entities,...
In recent years, there has been rapid advancement in the field of Vehicular ad-hoc network (VANET). In future, VANET communication will play a major role in enhancing safety and efficiency of the transportation system. If security is not provided in VANET, then it can results in obvious misapplication. Thus, security becomes an important issue in VANET. There are many security attacks like Sybil,...
This decade sees a growing number of applications of Unmanned Aerial Vehicles (UAVs) or drones. UAVs are now being experimented for commercial applications in public areas as well as used in private environments such as in farming. As such, the development of efficient communication protocols for UAVs is of much interest. This paper compares and contrasts recent communication protocols of UAVs with...
In VANETs, vehicles communicate with each other or with the road side units (RSU) to avoid accidents and traffics. For this communication, VANETs need a routing protocol which helps vehicles to exchange information in the network. Due to dynamic nature of VANET, routing the packets in the vehicular network is one of the challenging tasks. VANETs have many routing protocols but position based routing...
In this paper, we propose a reputation computation mechanism based on Hidden Markov Model (HMM) in VANET. The proposed model computes reputation value on the basis on received messages in VANET. Hence, VANET is characterized by high mobility and dynamic topology, where the vehicles exchange messages among them to enhance driving conditions. Due to hard delay constraints imposed by the need of small...
Vehicular Ad Hoc Networks (VANETs) is a form of mobile ad hoc network (MANETs)-where frequent changes in wireless network topology happen due to high mobility of vehicles. Routing of data packets in such highly mobile, multi hopped and without dedicated infrastructure environment is a big research challenges which need to be addressed by existing/proposing new solutions. In the past few years, a lot...
Vehicular ad hoc network (VANET) allows vehicles to communicate on the road and is becoming a potential solution to improve the traffic safety. Both trust management and privacy protection play critical roles in VANET but there needs to be a trade-off between them. Existing works only focus on each issue separately or resolve both issues with a lack-of-security proposal. In this paper, we propose...
Many Vehicular Ad Hoc Networks (VANETs) applications require the vehicle's location information to be available at anytime and anywhere within the network. Vehicle-to-vehicle (V2V) communication allows the exchange of mobility data, which includes position, speed and heading information, that can be used for location estimation. However, if the exchanged mobility data contains invalid or wrong information,...
Device-to-Device (D2D) communication has gained a lot of interest in the last years. Recently, it has been accepted as a promising concept as part of the third generation partnership project (3GPP) standard in the LTE-A release 12 and release 13 under the name of Proximity-Based Services (ProSe). However, the proposed solutions to integrate the D2D in the cellular network require added functionalities...
A major challenge in vehicular ad-hoc networks (VANETs) is the ability to account for resource sharing and location management so that multicasting/routing functions and bandwidth reservations can be organized efficiently. By creating clusters of vehicles we are able to control resource sharing and management functions in VANETs that are highly dynamic. In this paper, a D-hop clustering algorithm,...
For safety applications of Vehicular ad-hoc Network (VANET), many valuable broadcast protocols have been proposed nowadays, most of which are based either on sender or receiver. In fact, sender-based protocols would fall into invalidation owing to high mobility of vehicles, while receiver-based ones would generate extra delay. Combining both, this paper proposes a broadcast protocol with the minimum...
Vehicular adhoc networks come out to be a promising solution for ensuring traffic and road safety on highways. However this area induces communication challenges such as topology dynamics, and connectivity losses. Today's Vanet demand a sound planning to make architectural level decisions. Integrating Vanet with emerging Software defined Networking brings ground-breaking networking innovation. Recent...
Named Data Networking (NDN) has natural advantages to greatly overcome the challenges such as rapidly changing topology, short-lived and intermittent connectivity in Vehicular Ad hoc Networks (VANETs), owing to its name-based routing and in-network caching characteristics. However, the caching strategy in the Vehicular NDN, AlwaysCache, in which nodes will cache all solicited contents received or...
Recent years have seen a growing interest in Vehicular Ad hoc Networks (VANETs) and their benefits to the development of intelligent transportation systems (ITS). With the deployment of multimedia services over VANETs, there is a need to develop new approaches to insure higher level of quality of services (QoS) for real time applications, and integrate QoS into routing protocols. However, in VANET...
Clustering in vehicular ad hoc networks (VANETs) is a challenging issue due to the highly dynamic vehicle mobility and frequent communication disconnections problems. Recent years' research have proven that mobility-based clustering mechanisms considering speed, moving direction, position, destination and density, were more effective in improving cluster stability. In this paper, we propose a new...
In this work the allocation of Roadside Units (RSUs) in a V2I network is modeled as a Maximum Coverage Problem. The main objective is to maximize the number of distinct vehicles contacting the infrastructure. Two different approaches are presented to solve the problem. The first one is an ILP model that can found optimal solutions or give sharp upper and lower bounds for the problem. The second one...
The performance of Vehicular Ad hoc Networks (VANETs) is greatly affected by the design of Medium Access Control (MAC) protocol adopted by these networks. In large-scale networks, the MAC protocol of the IEEE 802.11p standard may fail to provide the required Quality of Service (QoS) provisioning, in terms of delay and reliability, for safety-related applications. Therefore, new MAC mechanisms should...
In this paper, an opportunistic relay selection policy related to the propagation characteristics for a vehicle-to-vehicle (V2V) relay-based system is presented, where a source communicates with a destination through multiple vehicle relay nodes. As Channel State Information (CSI) overhead is introduced by the relay selection process, reactive relaying is exploiting based on instantaneous CSI knowledge...
Vehicular Ad Hoc Networks (VANET) are the largest real life application of ad-hoc networks where nodes are represented via fast moving vehicles. This paper introduces the future emerging technology, i.e., Vehicular Cloud Networking (VCN) where vehicles and adjacent infrastructure merge with traditional internet clouds to offer different applications ranging from low sized applications to very complex...
Floating Car Data (FCD) applications are based on the collection of geo-localized information updates that are issued by vehicles roaming in a given area. These data are an essential source for traffic information and are widely employed by Intelligent Transportation Systems (ITS). We present and examine a hybrid networking architecture and protocol that are used for the efficient execution of such...
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